fix: Flatten module with default exports when available (#505)

Author: MauriceAyasse

packages/lib/src/prod/federation_fn_import.js

@@ -32,25 +32,24 @@ async function getSharedFromRuntime(name, shareScope) {
     }
   }
   if (module) {
-    if (module.default && Object.keys(module).length < 2)
-      module = module.default
-    moduleCache[name] = module
-    return module
+    return flattenModule(module, name)
   }
 }
 async function getSharedFromLocal(name) {
   if (moduleMap[name]?.import) {
     let module = await (await moduleMap[name].get())()
-    if (module.default && Object.keys(module).length < 2)
-      module = module.default
-    moduleCache[name] = module
-    return module
+    return flattenModule(module, name)
   } else {
     console.error(
       `consumer config import=false,so cant use callback shared module`
     )
   }
 }
+function flattenModule(module, name) {
+  if (module.default) module = Object.assign({}, module.default, module)
+  moduleCache[name] = module
+  return module
+}
 export {
   importShared,
   getSharedFromRuntime as importSharedRuntime,